At the moment, I’m absolutely in love with my new Cosmicar/Pentax 25/1.4 I wrote about in my last post. It is just lovely – it’s fast, it’s sharp, it give lots of great bokeh and it renders just beautifully. Before I’m getting to write my review on this lens, I’d like to share some of the pix I’ve been taking with it in the past few days (JPEGs from camera, only slightly adjusted).
Olympus E-P1 + Cosmicar/Pentax 25/1.4 @ f/1.4, 1/160 sec, ISO 200
See how sharp the text on the edge of the jar is, and how beatifully out-of-focus everything else? I know this is still just f/2.8 bokeh in 35mm terms, but coming from small sensor cameras mostly, for me this is just magical! 
Olympus E-P1 + Cosmicar/Pentax 25/1.4 @ f/1.4, 1/125 sec, ISO 800
This one was slightly adjusted for color and brightness. In the background you can’t see our courtyard 😉
Olympus E-P1 + Cosmicar/Pentax 25/1.4 @ f/1.4, 1/40 sec, ISO 1600
When I shot this, it was late evening and already dark outside. Our living room was being illuminated only by a dim lamp headed at the ceiling in one corner, and some light coming from the kitchen. Btw, this is Emil’s beloved “Wauwau” Slightly adjusted for color and brightness.
Olympus E-P1 + Cosmicar/Pentax 25/1.4 @ f/1.4, 1/125 sec, ISO 200
Our kitchen sink. My wife’s comment: “I’d never have thought of taking a picture of our kitchen sink …”
Olympus E-P1 + Cosmicar/Pentax 25/1.4 @ f/1.4, 1/100 sec, ISO 250
Emil eating a cookie. In this picture, I love how only his right eye and some of his hair is sharp, and everything else drifts into fuzziness. Gives it quite a dreamy look. This was also slightly modified for brightness and contrast.
To answer a question you might have – yes, it’s a bit difficult to get accurate focus at the lower aperture settings. For the last picture it took me several attempts because Emil’s head was moving so quickly … Also, if you don’t focus on something with high contrast, you need the magnification loupe at 10x, and even then the slightest movement of your hands or your subject might spoil it …
February 14th, 2010, 1:08 pm | 
Hello there.
I am a new subscriber to your blog. Found out about you from Steve Huff’s blog.
How do you find focusing this lens with the ep-1? You mentioned it is a bit difficult to get a shar photo of Emil (adorable btw) at f/1.4, but share with us the manual focusing process on this cam.
Looking forward for new exciting posts.
Dear Elio,
first, you get a hundred points for writing the first comment on my blog, congratulations! 😉
The main problem with getting a sharp picture at f/1.4 is (as with probably any lens that fast, for example the Panasonic 20/1.7) that as soon as your subject moves (or your hands, for that matter), it will move out of the very small in-focus area. This is of course not so much of a problem with static subjects, though.
Generally what I do when focusing is trying to get an approximately sharp image via the display (which is often accurate when I focus on something with high contrast), and then fine tune focusing using the magnification loupe at 10x.
I hope this answers your question – and thanks for asking, I will also mention this in my review of the lens.